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Are they all in the same workgroup still, and why does PC4 use a different DNS server then the others? Have you set static address's for all the computers or are they using DHCP, you should definitely set your printer to at least a static address.

Try this first (even though you probably have already), turn off the all the computers, unplug your modem and router (sounds like you just have one box so it's a combo unit) leave it unplugged for a minute then plug it in and wait about 5 minutes for it to come fully back up then turn on your computers again and see if there is any change. If no change then go to the network and sharing center then change adapter settings on the left. Follow this guide: How to Assign a Static IP Address in Windows 7, 8, 10, XP, or Vista Make the address's on each computer the one it already has under preferred in the command prompt windows you posted before so write that info down before starting the process to the computers. For your subnet mask it will put it in for you but it should be 255.255.255.0 and your gateway should be in your case your combo box of 192.168.10.254 . For the DNS area for testing use the first line as your gateway again then put 8.8.8.8 on the second line (this is googles public DNS servers). Once all the computers have their address's as static then your at a better place to keep troubleshooting.

PC Not Accessible Over Network

Some Network SHARES not accessibleI have an issue that is driving me nuts (short trip). I have some folders on a Win7Pro 64 machine (hardwired to gateway/switch) I want to share with other computers in our house. There are several folders, each containing many files. I do not want to put all files in the same folder.
The other...

Network & Sharing

Network computer not shown but AccessibleI have a peer to peer network of some 10 PCs. Now i enabled administrator account on all PCs but after enabling this account network PCs are not shown but if i want to access them through run command these are accessible. Plz tell me what can i do to show the PCs in windows explorer. All system r...

Network & Sharing

Network Computer not accessible after changing passwordHello - I am on a network that contains both XP and Windows 7 computers. The problem at hand is on a Windows 7 computer (Computer 9). The XP computer is Computer 4. I succeeded in accessing Computer 4 from Computer 9 by typing my Computer 4 credentials into a window that popped up on Computer 9 the...

Network drives are accessible but still have red XAfter coming back from an extended holiday it appears that all my network drives are working fine; unfortunately all the network drive icons still have the unable to reconnect to network drive icon with the red X.
How can I fix this problem?
I appreciate any responses.
Oli